An integral part of modern children's culture, mass media occupy the social whole and researchers almost daily and are at the center of passionate, theoretical discussions and critical analyses that lead to various and often conflicting positions regarding the possibilities they offer for the entertainment, information, and education of children, as well as their health, cultural values, social norms, and future. In this context, anything related to children's relationship with the media, especially preschool and early school-age children, arouses great interest and reflection at the same time. In this two-volume work, in addition to the necessary theoretical approaches that define the framework in which the discussion about children's relationship with the media takes place today, the aim is to present the research efforts made in recent years in Greece, focusing on issues related to the role of the media in everyday life, the development and education of children, as well as the concept of childhood that the media develop and cultivate in Greece. The interdisciplinary approaches proposed by a significant number of Greek researchers contribute - without risks or excessive optimism - to combining the pieces of the puzzle of this multifaceted and complex relationship between preschool and early school-age children and the media, and offer the opportunity to raise awareness among both the scientific community and the wider public on a subject that has not yet received the appropriate attention.